Heating-drum and ventilator



(INU Model.)

J.- SPRINGER.

- HBXA-THG DRUMAND VENTI-LATOR. l\o.l330,63.4 Patented Nov.. 17, 1885.

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ATENT OFFIC..

HEATING-DRUM AND VEN"I'ILATOR.

SPECIFICATION forming part of Letters Patent No. 330,633, dated November17, 1885.

Application tiled April 29, 1885.

To all whom it may cmwern:4

. Improvements in Heater-Drums and Ventilalators; and Ido hereby declarethat the following is a full, clear, and exact description thereof,reference being had to the accompanying drawings, which form a part ofthis specication.

This invention relates to certain new and useful improvements instove-pipe drums and ventilators; and the invention consists in thepeculiar construction and arrangement of an outer and inner drum,between which is located a spiral flue, while through the center of theinner drum is arranged a direct-draft smoke-flue; in the peculiararrangement of air pipes and passages, and in the combinations of thevarious parts, all as more fully hereinafter set forth.

In the accompanying drawings,which form a part of this specification,and in which my improved d-rum is shown in central vertical sec` tionand mounted upon a stove, A represents an outer shell or drum providedwith closed ends, which are in turn provided with smoke inlet and exitpipes B and .0, designed to be inserted in the line of stove-piping atthe desired point, as in the ordinary manner.

D represents the inner drum, which is provided with the heads Eand F.lIhrough this drum is formed the flue G, in line with the inlet and exitpipes B and O, while the upper end of such fiue G is provided with adamper, H, adapted to be operated by a damper-handle, I, from theoutside of the shell A. At or near the upper end of the drum D, andconnecting with the annular space between it and the iiue G, is anairiiue, J, which passes through the wall of the outer drum to dischargethe heated air into the room, or to a line of piping to deliver the heatto a room above. At the lower end of the inner drum, D, and.communicating therewith, is an airinlet pipe, K,which passes out throughthe wall of the shell A, and thence to the outer air, so' as to deliverfresh air to the device. Surrounding this air-pipe K is a larger pipe,L, which communicates with the drum A, while its opposite end extends tothe door and is provided with a series of holes, a, to admit of SerialNo.163,806. (No model.)

air being drawn into the pipe L from the door of the room. In theannular space between the inner and outer drums, and about the length ofthe inner drum, I rigidly secure a spiral flue-strip, M, in anyconvenient manner, thus converting such annular space into a spiralflue, N.

In practice when the device is mounted upon a stove, as-shown, when adirect draft is desired, as in starting a fire, the damper H is opened,allowing the smoke and products of combustion to pass directly to theexit-pipe through the flue G, and thence to the chimney. By turning thedamperH so as to close the upper end'of the flue G the products ofcombustion are compelled to find exit by passing up the spiral flue N,and in its passage throwing off a portion of its heat by radiation fromlthe outer drum, A, while it also heats the air contained in the innerdrum, causing it to discharge the heated air into the compartmentthrough the pipe J. rlhis creates a draft through the pipe K from theoutside, thereby furnishing the room continuously with a fresh supply ofheated air from the outside, forcing the cold air to thc oor,where y itis drawn into the pipe L and discharged through the drum A with theproducts of combustion.

The heads E and F of the inner drum I prefer to make of cast-iron withflanges upon which to secure the ends of the drum and iiue G.

What I claim as'my invention is- 1. In a combined heater-drum andventilator, the combnation,with the drums A Dand flue G, arranged Withinthe drum D, of the due L, communicating with the drum A, and the flue K,arranged within the line L and communicating with the drum D,substantially in the manner and for the purposes specified.

2. In a combined heater-drum and Ventilator, thecombination of the drumsAD, smokeues B, O, and G, air-dues J, K, and L, damp.- erH,andspiral'iiue-strip lVI,when constructed, arranged, and operatingsubstantiallyintlle manner and for the purposes specffl- JQHNQYLTRINGER.

Witnesses:

